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Effect of human settlements on urban thermal environment and factor analysis based on multi-source data:A case study of changsha city

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Journal of Geographical Sciences 2021年第6期31卷 819-838页

作者： XIONG Ying ZHANG Fang College of Architecture Changsha University of Science and TechnologyChangsha 410076China Hunan Key Lab of Land Resource Evaluation&Utilization Changsha 410007China Research Center of Resource Environment and Urban Planning Changsha 410114China

In view of the lack of comprehensive evaluation and analysis from the combination of natural and human multi-dimensional factors,the urban surface temperature patterns of changsha in 2000,2009 and 2016 are retrieved based on multi-source spatial data(Landsat 5 and Landsat 8 satellite image data,POI spatial big data,digital elevation model,etc.),and 12 natural and human factors closely related to urban thermal environment are quickly *** standard deviation ellipse and spatial principal component analysis(PCA)methods are used to analyze the effect of urban human residential thermal environment and its influencing *** results showed that the heat island area increased by 547 km~2 and the maximum surface temperature difference reached 10.1℃during the period 2000–*** spatial distribution of urban heat island was mainly concentrated in urban built-up areas,such as industrial and commercial agglomerations and densely populated urban *** spatial distribution pattern of heat island is gradually decreasing from the urban center to the *** were multiple high-temperature centers,such as Wuyi square business circle,Xingsha economic and technological development zone in changsha County,Wangcheng industrial zone,Yuelu industrial agglomeration,and Tianxin industrial *** 2000 to 2016,the main axis of spatial development of heat island remained in the northeast-southwest *** center of gravity of heat island shifted 2.7 km to the southwest with the deflection angle of 54.9°in 2000–*** center of gravity of heat island shifted to the northeast by 4.8 km with the deflection angle of 60.9°in 2009–*** the whole,the change of spatial pattern of thermal environment in changsha was related to the change of urban construction *** the PCA method,it was concluded that landscape pattern,urban construction intensity and topographic landforms were the main factors affecting the spatial pattern of urban thermal environmen

关键词： thermal environment natural-human factor multi-source data spatial PCA changsha city

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Uncertainty evaluation of the coordinated development of urban human settlement environment and economy in changsha city

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Journal of Geographical Sciences 2011年第6期21卷 1123-1137页

作者： XIONG Ying Department of Resources and Environmental Sciences Changsha University of Science and TechnologyChangsha 410004 China

The coordinated development of human settlement environment and economy is of vital significance to urban sustainable development and urban ecosystem health. Urban human settlement and economic systems exist in urban ecosystems, which are a structural complexity. Therefore the research is being challenged by some uncertain factors between human settlements and economic systems. However most of the researches were focused on its determinate objective aspects and qualitative analyses while less concern on the quanti- tative evaluation of coordinated development of urban human settlement environment and economy, especially little on its uncertain aspect. At present, the urgent task is to study the coordinated development of urban settlement environment and economy in terms of the effect of uncertainty. This study analyzed the uncertain characteristics, which would be confronted at different stages, such as confirming the index categories, their bound values, and their construction rate, etc. According to the actual urban conditions, many construction principles based on uncertainties are put forward and an indicating system for human settlement and economic evaluation is established. Moreover, the application of fuzzy mathematics presents a new method and a calculation model for the comprehensive assessment of the coordinated development of urban human settlement environment and economy. The application of the method and model in changsha city of China showed that the assessment results can reflect not only the overall coordination degree of the city, but also the mode of interactive mechanism between urban economic system and human settlement environment.

关键词： urban economic system urban human settlement environment uncertainty fuzzy mathematic coordinated development evaluation changsha city

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Epidemiologic survey and analysis of mild cognitive impairment amongst community senior citizens of changsha city

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Family Medicine and Community Health 2013年第4期1卷 10-17页

作者： Xueqing Zhang Hui Zeng Urology Department The First People’s Hospital of ChangdeHunan 415000China School of Nursing Central South UniversityHunan 410008China

Objective:The purpose of the current study was to conduct a mild cognitive impairment(MCI)prevalence survey among the community senior citizens of changsha city and analyze possible relevant factors so as to perform early screening and intervention for MCI patients,and delay or prevent MCI from developing into Alzheimer’s disease(AD).Methods:Between April and September 2012,a total of 1764 community senior citizens in changsha city were selected through multi-stage and random cluster sampling as study *** following tables were used during the investigation to perform preliminary MCI screening for the subjects of this study:a general information survey;Mini-Mental State examination(MMSe);Montreal Cognitive Assessment(MoCA);Beijing version;global Deteriorate Scale(gDS);Clinical Dementia Rating(CDR)scale;and Activities of Daily Living(ADL)***,neurology specialists made diagnoses according to the actual status of subjects,survey findings,and clinical MCI diagnostic *** prevalence of MCI was calculated and the rates concerning senior citizens with different demographic characteristics were *** regression analysis was used to analyze relevant factors that led to MCI,and comparing findings with those of other cities was ***:The MCI prevalence among senior citizens in changsha city was 16.27%(287/1764).The MCI prevalence increased with age[for the 60,70,and 80 age groups,the prevalence was 9.79%(84/858),20.14%(149/740),and 32.53%(54/166),respectively,P<0.05].The more education received,the less the likelihood of developing MCI[the prevalence of illiteracy,those who went to pri-mary school,junior high school,senior high school,or technical secondary school,college,and un-dergraduates and above was 32.10%(26/81),18.40%(90/489),13.97%(70/501),15.29%(61/399),14.39%(19/132),and 12.96%(21/162),respectively,P<0.05].Bluecollar workers’chances of developing MCI was higher than white-collar workers[19.12%(187/978)and 12.72%(100/78

关键词： Senior citizens Mild cognitive impairment(MCI) Alzheimer’s disease(AD) MMSE MoCA GDS CDR ADL Neurology changsha city

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Female Employees' Dignity at Work in Recreation Industry: An Empirical Study of Female Foot Therapists in changsha city

Female Employees' Dignity at Work in Recreation Industry: An...

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2016战略管理国际会议

作者： Li Yang Ruwan Ranasinghe Cheng Li School of History & Culture (Tourism) Sichuan University

Female employees play a significant role in recreation industry. Despite the rapid expansion of recreation industry, study on role of females in it has not received a considerable attention. Especially, female employees in lower-class recreation activities have drawn less attention in empirical studies. This study empirically examines the nature and determinants of female foot therapists' dignity at work in changsha city. Results indicate that: there is a severe lack of female foot therapists' dignity at work;working hours, working environment and job safety are key determinants of female foot therapists' dignity at work, while labor wage and social security have positive correlation with their dignity at work respectively;the labor contract doesn't have an impact on their dignity at work. This study contributes with imperative implications for policymakers in enhancing labor relations, improving working environment and heightening the social security system.

关键词： female foot therapists dignity at work recreation industry empirical study changsha city

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Evolution and Simulation of Spatial-temporal Heterogeneities in Ecological Background Quality of changsha city

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Journal of Landscape Research 2016年第6期8卷 46-52页

作者： YU Bingjie TANG Youhai WEI Zhe BI Linglan ZHANG Lei School of Architecture and Design Southwest Jiaotong University

By GIS and ENVI,TM/ETM remote sensing images of five districts(Yuelu District,Furong District,Yuhua District,Tianxin District and Kaifu District) in changsha city center in 2005,2010 and 2015 were ***,distribution chart for ecological background factors in 2020 was simulated by using CA-Markov module in *** principal component analysis,evaluation model for ecological background quality of the city was *** circle analysi s,GS+semi variance function analysis,hot spot area analysis and grey correlation analysis,integrated analysis and evaluation on spatial heterogeneity evolution of ecological background quality in research region were *** showed that firstly changsha overall has formed ecological pattern of landscape island city,but ecological background started to show the evolution trend of high heterogeneity and fragmentation under the construction land expansion,and ecological background quality of the city declined from 0.300,6 to 0.257,1 during ***,ecological background quality of changsha city had typical circle and axial gradient structure,and "eco tone" had the most violent ***,spatial structure of ecological background quality had region,time and direction heterogeneities,and spatial heterogeneity of region was the most ***,hot spot area distribution of ecological background quality evolution showed the "frog jump" trend of gathering in marginal zone and diffusing to peripheral ***,in driving factors of ecological background quality,industrialization rate had the highest grey correlation degree(0.842,1),and grey absolute correlation degree between ecological background quality in Yuelu District and industrialization rate was the highest(0.603,1).

关键词： changsha city Ecological background quality Spatial heterogeneity Simulation prediction Grey correlation

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化冰盐对灾后长沙城市森林植物的危害

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中国城市林业 2008年第2期6卷 6-9页

作者：吴际友侯伯鑫王旭军廖德志程勇湖南省林业科学研究院长沙410004

2008年1月中旬至2月初,50年以来罕见的严重冰冻灾害,对长沙城市森林植物损害巨大[1]。抗冰救灾期间,为保交通,对市区范围"6纵15横"共21条主干道进行撒盐融冰,据有关部门统计,至2月4日,累计抛撒工业用盐近7000t,日均撒盐量达600t[2-3]。... 详细信息

2008年1月中旬至2月初,50年以来罕见的严重冰冻灾害,对长沙城市森林植物损害巨大[1]。抗冰救灾期间,为保交通,对市区范围"6纵15横"共21条主干道进行撒盐融冰,据有关部门统计,至2月4日,累计抛撒工业用盐近7000t,日均撒盐量达600t[2-3]。大量使用工业盐或氯盐类融雪剂化冰,对桥梁、公路及植物等产生的次生灾害国内外己有深刻的教训。为此,我们对长沙市主干道绿化带进行了跟踪调查,发现目前大面积花灌木死亡或生长不良的主要原因除遭受严重冻害之外,渗入绿化带土壤中的盐分已使土壤出现不同程度的盐碱化,对适宜酸性土生长的本土植物构成了不可低估的生态灾害。本文旨在为长沙城市森林灾后重建工作提出解决途径。

关键词： Ice-melt Salt Soil basification Landscape plant changsha city

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长沙城市森林树种冰冻灾害的调查与反思

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中国城市林业 2008年第1期6卷 10-13页

作者：廖德志吴际友侯伯鑫王旭军程勇湖南省林业科学院长沙410004

2008年1月中旬至2月初,湖南遭遇50年以来罕见的严重冰冻灾害,大面积交通受阻,供电中断,给全省人民的生产生活带来严重影响。持续了20多天的冰冻,对长沙城市森林损害巨大,大量木竹倒伏、折枝、断干、翻蔸,其中栽植密度较大的景观林、生... 详细信息

2008年1月中旬至2月初,湖南遭遇50年以来罕见的严重冰冻灾害,大面积交通受阻,供电中断,给全省人民的生产生活带来严重影响。持续了20多天的冰冻,对长沙城市森林损害巨大,大量木竹倒伏、折枝、断干、翻蔸,其中栽植密度较大的景观林、生态林和湿地松、火炬松、桉树、香樟、桂花、广玉兰、毛竹、观赏竹类等常绿树种及古树名木受冰冻雪压尤为严重。通过对灾情的调查与反思,提出在我国南方城市森林建设中,要加强抗灾预警机制的建设,要重视选用抗冰冻雪压性能强的乡土树种。

关键词： Urban forest Frost disaster Cold-resistant tree specie changsha city

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长沙市古树名木资源及其保护对策

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中国城市林业 2007年第4期5卷 54-57页

作者：侯碧清侯伯鑫黄哲缪赐立李小红李研胡佐胜华南环境资源研究院中南林业科技大学长沙市园林管理局

据调查,长沙市建档树龄100年以上的古树名木1265株,分属34科54属69种。其中一级古树23株,二级古树51株,三级古树1191株,属最多的科是蝶形花科,有4属。种最多的科是壳斗科,有6种。株数最多的树种是香樟,有438株,其次是枫香,有250株,两者... 详细信息

据调查,长沙市建档树龄100年以上的古树名木1265株,分属34科54属69种。其中一级古树23株,二级古树51株,三级古树1191株,属最多的科是蝶形花科,有4属。种最多的科是壳斗科,有6种。株数最多的树种是香樟,有438株,其次是枫香,有250株,两者累计占全市古树名木总株数的54.39%。资源最多的是岳麓区,有714株,占全市总株数的56.44%。利用MAPINFO PRO-FESSIONAL地理信息系统软件为平台,建立了长沙市古树名木资源动态管理系统,为古树名木的保护奠定了基础。针对存在的问题,提出了全市古树名木的保护对策。

关键词： Old-tree resource protectionmeasures changsha city

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